1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lilavasa [31]
3 years ago
9

Allyson and Adrian have decided to connect their ankles with a bungie cord; one end is tied to each person's ankle. The cord is

30 feet long, but can stretch up to 90 feet. They both start from the same location. Allyson moves 10 ft/sec north and Adrian moves 8 ft/sec west. There is a building with the nearest corner 30 ft north and 20 ft west of the girls' starting point. When will the bungie cord first touch the corner of the building?
Mathematics
1 answer:
BARSIC [14]3 years ago
3 0

Answer: 5.5 seconds

Step-by-step explanation:

30=5/4 ×(-20) + 10t

30 =-25 +10t

10t=55

t=5.5seconds

The cord will first touch the corner of the building after 5.5secs

You might be interested in
Round off 3. 55 to one significant figure
Anika [276]

Answer:

3.6

Step-by-step explanation:

We must first clarify how a number is rounded.

To round a number to unity we have to look at the first number after the comma.

If this number is less than 5 (1, 2, 3, 4) we should not do anything, but if that number is 5 or greater (5, 6, 7, 8, 9) we must add a unit to the number.

That is to say:

<5 do nothing

=> 5 round to the next number (+1)

So in the case of 3.55 it would be.

3.55 = 3.6

8 0
3 years ago
Students who attend Washington Middle School are either in seventh or eighth grade.
IgorLugansk [536]

Answer:

There are 1240 students at Washington middle school.  

Step-by-step explanation:

Percentages and Portions

We can find portions of a whole by correctly managing the percentages of each part. We know 25% of all students at Washington middle school were on the honor roll. From that portion, 60% of the students are seventh graders. That means 40% of the 25% are eight graders, i.e. 40*25%=10% were from eight grade.

We have 10% of all students are 124, thus the number of students are 124/10%=1240

There are 1240 students at Washington middle school.  

Let's test the answer. 25% of 1240 students are on the honor roll, which is 310 students. 40% of 310 students are from 8th grade, 40%*310 = 124 as stated in the problem

3 0
3 years ago
Determine if the following triangle is a right Triangle. Write your answer, claim, as a
Reptile [31]

Answer:

Step-by-step explanation:

Check if the lengths of the sides follows the Pythagorean theorem.

9² + 12² ≟ 15²

81 + 144 ≟ 225

225 = 225

Triangle ABC is a right triangle.

7 0
3 years ago
1
velikii [3]
<h3>Answer: B) Experiment</h3>

Reason:

Whenever you have two groups like this, one labeled the treatment group and the other the control group, we have an experiment gong on.

The treatment group gets the actual medication that is being tested. The control group gets a fake medication, aka placebo. Usually a placebo is meant for humans because it's more of a psychological factor. With cats, it likely won't affect them. However, such practices of having two groups like this is standard no matter what group of subjects you're testing.

The idea is that if the treatment group has better results compared to the placebo group, then it's likely the medication works.

4 0
2 years ago
What is the volume of the prism below?
Fudgin [204]

Answer: A) 150 cubic units

V = area of the base <u>times</u> the height of the prism.

(5)(6) = 30

30/2 =15

V = (15)(10)

V = 150 cubic units

5 0
2 years ago
Other questions:
  • Triangle ABC has vertices A (0,10) B (4,10) and C (-2,4) find the orthocenter of triangle ABC
    7·2 answers
  • What is the answer too -4(3a-5b-7)
    11·1 answer
  • √75+√5<br><br> Show your work!!!
    12·1 answer
  • A square with side x, is changing with time where x(t)=3t+1. What is the formula for the rate of change of the area of the squar
    12·1 answer
  • What’s the answer?? (SOMEONE PLEASE HELP ME)
    10·1 answer
  • A doctor sees each of her patients for 25 minutes during a typical appointment how many patients can she see in a typical 7 and
    15·1 answer
  • Helppppppppppppppppppppppppppppppppppppppppppppppppp
    12·1 answer
  • What is 4 /25 in a whole number
    12·2 answers
  • What does the interior angles of a triangle sum up to be? Why?
    6·2 answers
  • Giải phương trình vi phân<br> x=y′2−y′+2
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!